Three speed, five speed and six speed Brompton bikes use a hub gear rear wheel. Here we list all of the controls needed for the hub gears, from triggers / shifters, to gear cables and indicator chains.
Brompton integrated hub gear shifter / brake, 3 speed - works with both Sturmey Archer and SRAM 3 speed hub gears
Brompton hub gear indicator chain for 3 speed SRAM / Sachs - QGICH3-SR